 /*******************************************************************************
  * Copyright (c) 2007 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.ide;

 import java.net.URI ;

 import org.eclipse.core.filesystem.IFileStore;
 import org.eclipse.core.runtime.Assert;
 import org.eclipse.core.runtime.Platform;
 import org.eclipse.jface.resource.ImageDescriptor;
 import org.eclipse.ui.IMemento;
 import org.eclipse.ui.IPersistableElement;
 import org.eclipse.ui.IURIEditorInput;
 import org.eclipse.ui.model.IWorkbenchAdapter;

 /**
  * Implements an IEditorInput instance appropriate for
  * <code>IFileStore</code> elements that represent files
  * that are not part of the current workspace.
  *
  * @since 3.3
  *
  */
 public class FileStoreEditorInput implements IURIEditorInput, IPersistableElement {

     /**
      * The workbench adapter which simply provides the label.
      *
      * @since 3.3
      */
     private static class WorkbenchAdapter implements IWorkbenchAdapter {
         /*
          * @see org.eclipse.ui.model.IWorkbenchAdapter#getChildren(java.lang.Object)
          */
         public Object [] getChildren(Object o) {
             return null;
         }

         /*
          * @see org.eclipse.ui.model.IWorkbenchAdapter#getImageDescriptor(java.lang.Object)
          */
         public ImageDescriptor getImageDescriptor(Object object) {
             return null;
         }

         /*
          * @see org.eclipse.ui.model.IWorkbenchAdapter#getLabel(java.lang.Object)
          */
         public String getLabel(Object o) {
             return ((FileStoreEditorInput) o).getName();
         }

         /*
          * @see org.eclipse.ui.model.IWorkbenchAdapter#getParent(java.lang.Object)
          */
         public Object getParent(Object o) {
             return null;
         }
     }

     private IFileStore fileStore;
     private WorkbenchAdapter workbenchAdapter = new WorkbenchAdapter();

     /**
      * @param fileStore
      */
     public FileStoreEditorInput(IFileStore fileStore) {
         Assert.isNotNull(fileStore);
         this.fileStore = fileStore;
         workbenchAdapter = new WorkbenchAdapter();
     }

     /*
      * @see org.eclipse.ui.IEditorInput#exists()
      */
     public boolean exists() {
         return fileStore.fetchInfo().exists();
     }

     /*
      * @see org.eclipse.ui.IEditorInput#getImageDescriptor()
      */
     public ImageDescriptor getImageDescriptor() {
         return null;
     }

     /*
      * @see org.eclipse.ui.IEditorInput#getName()
      */
     public String getName() {
         return fileStore.getName();
     }

     /*
      * @see org.eclipse.ui.IEditorInput#getPersistable()
      */
     public IPersistableElement getPersistable() {
         return this;
     }

     /*
      * @see org.eclipse.ui.IEditorInput#getToolTipText()
      */
     public String getToolTipText() {
         return fileStore.toString();
     }

     /*
      * @see org.eclipse.core.runtime.IAdaptable#getAdapter(java.lang.Class)
      */
     public Object getAdapter(Class adapter) {
         if (IWorkbenchAdapter.class.equals(adapter))
             return workbenchAdapter;
         return Platform.getAdapterManager().getAdapter(this, adapter);
     }

     /*
      * @see java.lang.Object#equals(java.lang.Object)
      */
     public boolean equals(Object o) {
         if (o == this)
             return true;

         if (o instanceof FileStoreEditorInput) {
             FileStoreEditorInput input = (FileStoreEditorInput) o;
             return fileStore.equals(input.fileStore);
         }

         return false;
     }

     /*
      * @see java.lang.Object#hashCode()
      */
     public int hashCode() {
         return fileStore.hashCode();
     }

     /* (non-Javadoc)
      * @see org.eclipse.ui.IURIEditorInput#getURI()
      */
     public URI getURI() {
         return fileStore.toURI();
     }

     /*
      * (non-Javadoc)
      * @see org.eclipse.ui.IPersistableElement#getFactoryId()
      */
     public String getFactoryId() {
         return FileStoreEditorInputFactory.ID;
     }

     /* (non-Javadoc)
      * @see org.eclipse.ui.IPersistable#saveState(org.eclipse.ui.IMemento)
      */
     public void saveState(IMemento memento) {
         FileStoreEditorInputFactory.saveState(memento, this);
         
     }

 }

